Why Does Spermatogenesis Result in Four Spermatids but Oogenesis Only in One Ovum?
Spermatogenesis leads to the formation of four spermatids from each primary spermatocyte, whereas each primary oocyte produces only a single... View Article
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How Many Sperm Are Produced from 5 Primary Spermatocytes?
Each primary spermatocyte produces four sperms therefore 5 primary spermatocytes will produce 20 sperms. Primary spermatocytes undergo first meiotic division... View Article
What Does a Regressing Corpus Luteum Indicate?
Regression of the corpus luteum indicates the absence of pregnancy and the end of the luteal phase. The corpus luteum... View Article
Where Are Leydig Cells Located What Do They Secrete?
Leydig cells are located in the interstitial space present outside the seminiferous tubules in the testes. Leydig cells synthesise and... View Article
Which Hormone Causes FSH and LH to Be Released?
FSH and LH are known as gonadotropins. They are released by the anterior pituitary. Gonadotropin-releasing hormone (GnRH) secreted by the... View Article
What Happens to the Graafian Follicle If Fertilisation Does Not Occur?
Graafian follicles rupture and release ovum during ovulation. The remains of the Graafian follicle transform into corpus luteum in the... View Article
How Many Follicles Are Normal in Each Ovary?
Primary oocytes get surrounded by the granulosa cells to form primary follicles. Each ovary contains around 60,000 – 80,000 primary... View Article
What Enzymes Does Acrosome Contain?
Acrosomes contain proteolytic enzymes such as hyaluronidase and acrosin. It helps sperm in penetrating the ovum through the zona pellucida... View Article
Do Sertoli Cells Produce Sperm?
No, Sertoli cells do not produce sperms. They are nutritive cells of the seminiferous tubules. They provide nutrition to germ... View Article
What Is the Common Site of Fertilization?
The common site of fertilization is the ampulla of the fallopian tube or oviduct. Fallopian tubes have three main parts,... View Article
What Hormone Causes the Formation of Corpus Luteum?
LH or luteinizing hormone secreted from the anterior pituitary induces ovulation from Graafian follicles and helps in maintaining the corpus... View Article
Do Sperm Cells Have Mitochondria?
Yes, sperm cells have numerous mitochondria in the middle piece. They provide the energy to facilitate sperm motility. Also Check:... View Article
How Is Polyspermy Blocked?
Polyspermy is blocked by the structural changes in the zona pellucida layer. On entry of one sperm, the zona pellucida... View Article
How Many Sperm Cells Can Fertilize an Egg?
Only one sperm can fertilize an egg. When sperm comes in contact with the zona pellucida layer of the sperm,... View Article
What Does the Follicle Secrete?
The growing follicles secrete estrogens. LH and FSH (gonadotropins) stimulate the development of growing follicles and the secretion of estrogens.... View Article
Which Phase Is the Longest Phase in Oogenesis?
The longest phase in oogenesis is the diplotene stage of prophase I, where the first meiotic division gets arrested in... View Article
Which Hormone Stimulates Leydig Cells?
Leydig cells or interstitial cells are present in the testes outside seminiferous tubules. LH or luteinizing hormone secreted by the... View Article
What Is a Secondary Oocyte?
Secondary oocyte gives rise to the ovum or ootid. It is produced in the tertiary follicle by the first meiotic... View Article
When a Secondary Oocyte Divides What Are the 2 Cells That it Will Produce?
The secondary oocyte divides by second meiotic division and produces the ovum or egg and the second polar body. Most... View Article
Why Do Fallopian Tubes Have Cilia?
Fallopian tubes connect the ovaries to the uterus. The internal lining of the fallopian tubes is made up of ciliated... View Article
